diff --git a/core/embed/trezorhal/stm32f4/sdcard.c b/core/embed/trezorhal/stm32f4/sdcard.c
index 75d46a9a81..443737abe6 100644
--- a/core/embed/trezorhal/stm32f4/sdcard.c
+++ b/core/embed/trezorhal/stm32f4/sdcard.c
@@ -298,9 +298,6 @@ secbool sdcard_read_blocks(uint32_t *dest, uint32_t block_num,
 
   HAL_StatusTypeDef err = HAL_OK;
 
-  // we must disable USB irqs to prevent MSC contention with SD card
-  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
-
   sd_dma.Instance = DMA2_Stream3;
   sd_dma.State = HAL_DMA_STATE_RESET;
   sd_dma.Init.Channel = DMA_CHANNEL_4;
@@ -340,8 +337,6 @@ secbool sdcard_read_blocks(uint32_t *dest, uint32_t block_num,
   HAL_DMA_DeInit(&sd_dma);
   sd_handle.hdmarx = NULL;
 
-  restore_irq_pri(basepri);
-
   return sectrue * (err == HAL_OK);
 }
 
@@ -359,9 +354,6 @@ secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num,
 
   HAL_StatusTypeDef err = HAL_OK;
 
-  // we must disable USB irqs to prevent MSC contention with SD card
-  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
-
   sd_dma.Instance = DMA2_Stream3;
   sd_dma.State = HAL_DMA_STATE_RESET;
   sd_dma.Init.Channel = DMA_CHANNEL_4;
@@ -401,7 +393,5 @@ secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num,
   HAL_DMA_DeInit(&sd_dma);
   sd_handle.hdmatx = NULL;
 
-  restore_irq_pri(basepri);
-
   return sectrue * (err == HAL_OK);
 }
diff --git a/core/embed/trezorhal/stm32u5/sdcard.c b/core/embed/trezorhal/stm32u5/sdcard.c
index 1f8d22c57e..c54e7ebaf1 100644
--- a/core/embed/trezorhal/stm32u5/sdcard.c
+++ b/core/embed/trezorhal/stm32u5/sdcard.c
@@ -301,16 +301,12 @@ secbool sdcard_read_blocks(uint32_t *dest, uint32_t block_num,
 
   HAL_StatusTypeDef err = HAL_OK;
 
-  // we must disable USB irqs to prevent MSC contention with SD card
-  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
-
   sdcard_reset_periph();
   err =
       HAL_SD_ReadBlocks_DMA(&sd_handle, (uint8_t *)dest, block_num, num_blocks);
   if (err == HAL_OK) {
     err = sdcard_wait_finished(&sd_handle, 5000);
   }
-  restore_irq_pri(basepri);
 
   return sectrue * (err == HAL_OK);
 }
@@ -329,9 +325,6 @@ secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num,
 
   HAL_StatusTypeDef err = HAL_OK;
 
-  // we must disable USB irqs to prevent MSC contention with SD card
-  uint32_t basepri = raise_irq_pri(IRQ_PRI_OTG_FS);
-
   sdcard_reset_periph();
   err =
       HAL_SD_WriteBlocks_DMA(&sd_handle, (uint8_t *)src, block_num, num_blocks);
@@ -339,7 +332,5 @@ secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num,
     err = sdcard_wait_finished(&sd_handle, 5000);
   }
 
-  restore_irq_pri(basepri);
-
   return sectrue * (err == HAL_OK);
 }